I can't describe this with words, this is amazing! They are finally gonna fix this problem once and for all!

I quote

"We have released an update to Half-Life 1 dedicated servers. This update is moving the heartbeating protocol for servers to go over a more reliable channel and also contains some code fixes in the steam support portion of the server. After this update the "setmaster" command will return "none", this is by design, your server will still be reported.

We expect to disable the old reporting method in the next week or so, so please apply this update at your earlier convenience.

- Alfred

This change is made to remove from server browser the fake servers? )

And "reliable channel" means same solution implemented in TF2? If so, this
can't be true )

Right, its moving to use the same system TF2 has been for a fair while""